Lock latch



FIG. 1 is a top front and right perspective view of a lock latch system showing my new design;

FIG. 2 is a top, rear and side perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a side elevational view thereof.

The broken lines indicate non-claimed portions and form no part of the claimed design. 

CLAIM The ornamental design for a lock latch, as shown and described. 